Solution-Based Glow Discharges for Atomic Emission Spectroscopy Come of Age

RF Glow Discharge Atomic Emission Spectroscopy of Non-Conducting Materials

Analysis of Optical Emission Spectroscopy on Discharges

Optical spectroscopy is investigated with respect to its capabilities to yield temperature information from line intensities of low temperature plasmas. The method is non-invasive and easy to perform experimentally. The data analysis model consists of a population model describing the intensities of light emission. Geometry effects and measurement errors are encountered. The quantity of interes...

Absolute Spatially- and Temporally-Resolved Optical Emission Measurements of rf Glow Discharges in Argon

Spatially- and temporally-resolved measurements of optical emission intensities are presented from rf discharges in argon over a wide range of pressures (6.7 to 133 Pa) and applied rf voltages (75 to 200 V). Results of measurements of emission intensities are presented for both an atomic transition (Ar I, 750.4 nm) and an ionic transition (Ar II, 434.8 nm). The absolute scale of these optical e...

Modeling nonthermal plasmas generated in glow discharges*

Over the past decade, tremendous progress has been made in the modeling of nonthermal plasmas, and models have now reached the point that they are being used to help guide the experimental optimization of plasma based devices. In this communication we provide an overview of models used to describe nonthermal plasma generated in glow discharges. We show results from two applications, plasma disp...

Apparent secondary-electron emission coefficient and the voltage-current characteristics of argon glow discharges.

The accuracy of secondary-electron emission coefficients, that are used as input data of discharge models, seriously influences the calculated discharge characteristics. As it is very difficult to consider all possible electron emission processes of a cold cathode separately, in most of the recent models an apparent secondary coefficient gamma is applied, which is often assumed to be constant, ...